Petrol-motor.



PATENTBD NOvf a, 1903,

"A, OLEOIENTl OETROL MOTOR. ARPLIOATION FILED` 00129, 1902.

i No MODEL.

1H: Nonms PETERS co, PHoTuLn'uo, wAsHmaTp, u4 c ive. 742,976.

UNITED STATES Patented ovember 3, 1903.

yPrrniwr OFFICE.

ADoLPI-in CLMENT, oF LEvALLoIsPERRnT, FRANCE.

SPECIFICATION forming part ofLetters Patent N o. 742,970, dated November 3, 191053.

Application led October 9, 1902. Serial Nc. 126,383. (No model.)

To @ZZ whom t may concern:

Be it known that I, ADOLPHE CLMENT, a citizen of the Republic of lFrance, residing in Levallois-Perret, Seine, France, have invented certain new and and useful Improvements in and Relating to Petrol-Motors,of which the following is a specification.

This invention relates to a four-cycle motor comprising any number of cylinders, the characteristic features of which will be readily understood from the following description and accompanying drawings.

Figure l is a vertical section through a motor in accordance with my invention. Fig. 2 is a corresponding plan View. Fig. 3 shows 'a modied form of joint between the cylinder This part of the case is therefore given the form necessitated by the parts in movement within it.

ed. The valve-chests are arranged in the cylinder ends. These cylinders are absolutely bare and smooth externally, so that they may be cast or molded in one piece, owing to which no removal of sand is necessary. For this purpose the case A, carrying ordinarily the fly-wheels and the crank-shaft and which usually serves as framework or point of support for the cylinders, is bolted upon an upright support or base and is continued upwardly, so as to form an envelop C for the driving-cylinder. This envelop is round if there is only one cylinder and oblong if the motor has more than one cylinder. ln either case all the cylinders in line are surrounded by the same envelop connected to the shaftcase, and they provide an interval around the wall of the cylinder for the reception of the quantity of Water required for cooling purposes. A restricted portion a of this envelop,which rests against the cylinder or cylinders, serves to center the cylinder in the envelop. Tightness between the envelop and The cylinder or cylinders B are of cast-iron and are externally water-jacket-` the cylinder is obtained above by means of a collar D, cast upon the cylinder and which is fixed upon the upper portion E of the envelop. The cylinder is fitted and held true in the envelop. It is maintained there by the upper collar D, forming a tightjoint, and by a lower nut b at the bottom of the cylinder. This nut is tightened against the circular base a', Y

cast in the shaft-case, with the interposition of a circular rib or joint c, of asbestos or other incombustible material, which serves as a packing-joint and as a cushion to allow for diierence of elongation of the cylinder with respect to the outer envelop of a metal of which the linear coeficient of elongation is dierent. The nut b is screwed upon the cylinder B in Fig. l or within the envelop, Fig. 3. It is preferable that the packing-rib a shall be quite low and the guiding-rib a comparatively high, as shown, though this separation of the two ribs is not of course essential. The process of mounting the cylinder is thus simply the fitting of its cylindrical portion within the envelop. The cylinder is perfectly homogeneous, as it is cast without a core. In additionto this being turned internally and externally the thicknesses are preserved and no deformation in thecircular direction is produced.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, l declare that what I claim is- 1.V In ,a petrol-motor having a shaft-case,

Athe combination of adriving-cylinder, smooth externally, with an independent water-jacket formed by a prolongation around the cylinder of the shaft-case, this independent envelop being formed with a restricted or reduced portion which bears against the driving-cylinder, and a packing-joint including an interposed ring of cushioning material c preventing communication between the shaftcase and the independent water-jacket and permitting differences ot' elongation of the cylinder and the envelop, substantially as described.

2. Iu a petrol-motor having a shaft-case, the combination of adriving-cylinder, smooth externally, with an independent Water-jacket formed by a prolongation around the cylin- IOC der of the shaft-case, the upper portion of the cylinder having a collar cast thereon and which is attached to the upper part of the envelop forming the prolongation of the shaft- 5 case, this independent envelop being formed With a restricted or reduced portion which bears against the driving-cylinder, and a packing-joint including an interposed ring' of cushioning material c preventing commu- Io nication between the shaft-case and the independent Water-jacket and permitting differences of elongation of the cylinder and the envelop, substantially as described.

I witness whereof I have hereunto signed my name in the presence of two subscribing 15 

